I’d say it’s unlikely. No one has seen (or remembered) seeing one of these until very recently. Back in the day when promos were trading all over the place these were nowhere to be seen. If they were a legit promo, they would have almost certainly appeared before now.
If it was an in house thing, then it’s not really anything more than a personal mix tape

That said it looks like it’s now showing as sold on eBay anyway, last week 10/12/18 for £64.19 ($80.99) !!!

I’d happily still buy this but wouldn’t pay anything like that kind of money for it! I picked up the ‘Selections from the Past’ CD which is another very suspicious looking promo but only paid $9.99 for that one on Discogs. That CD actually looks half decent, if anyone wants to see pictures of that I’ll post them up.